Dante Alighiere, PURGATORIO, Canto X

Illustration by Salvador Dali
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Being admitted at the gate of purgatory, our Poets ascend a winding path up the rock, till they reach an open and level space that extends each way round the mountain. On the side that rises, and which is of white marble, are seen artfully engraven many stories of humility, which whilst they are contemplating, there approach the souls of those who expiate the sin of pride, and who are bent down beneath the weight of heavy stones.